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Submission #1083998

# Submission time Handle Problem Language Result Execution time Memory
1083998 2024-09-04T18:53:45 Z I_FloPPed21 Robot (JOI21_ho_t4) C++14
0 / 100
 3000 ms 1059400 KB 
#include <bits/stdc++.h>
using namespace std;

const int N=1e5+1;
const int M=2e5+1;
int n,m;
unordered_map<int,long long>mp[N];
vector<pair<int,pair<int,long long>>>adj[N];
long long dp[N];
int main()
{
    cin>>n>>m;
    for(int i=1; i<=n; i++)
        dp[i]=1e18;
    for(int i=1; i<=m; i++)
    {
        int a,b,color,c;
        cin>>a>>b>>color>>c;
        adj[a].push_back({b,{color,c}});
        adj[b].push_back({a,{color,c}});
        mp[a][color]+=c;
        mp[b][color]+=c;
    }
    dp[1]=0;
    priority_queue<pair<long long,int>> pq;
    pq.push({0,1});
    while(!pq.empty())
    {
        int cost=-pq.top().first;
        int nod=pq.top().second;
        pq.pop();
        for(auto u:adj[nod])
        {
            int cost1=u.second.second;
            int cost2=mp[nod][u.second.first]-cost1;
            cost1=min(cost1,cost2);

            if(dp[u.first]>cost1+dp[nod])
            {
                dp[u.first]=cost1+dp[nod];
                pq.push({-dp[u.first],u.first});
            }

        }
    }

    if(dp[n]==1e18)
    {
        cout<<-1<<'\n';
        return 0;
    }
    cout<<dp[n]<<'\n';

    return 0;
}

Compilation message

Main.cpp: In function 'int main()':
Main.cpp:29:13: warning: unused variable 'cost' [-Wunused-variable]
   29 |         int cost=-pq.top().first;
      |             ^~~~

Subtask #1
0 / 34.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 8792 KB Output is correct
2 Correct 2 ms 8796 KB Output is correct
3 Correct 2 ms 8796 KB Output is correct
4 Correct 1 ms 8796 KB Output is correct
5 Correct 2 ms 8796 KB Output is correct
6 Execution timed out 3117 ms 1059400 KB Time limit exceeded
7 Halted 0 ms 0 KB -

Subtask #2
0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 76 ms 19796 KB Output is correct
2 Correct 35 ms 14420 KB Output is correct
3 Correct 110 ms 23376 KB Output is correct
4 Correct 52 ms 16980 KB Output is correct
5 Incorrect 266 ms 42812 KB Output isn't correct
6 Halted 0 ms 0 KB -

Subtask #3
0 / 42.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 8792 KB Output is correct
2 Correct 2 ms 8796 KB Output is correct
3 Correct 2 ms 8796 KB Output is correct
4 Correct 1 ms 8796 KB Output is correct
5 Correct 2 ms 8796 KB Output is correct
6 Execution timed out 3117 ms 1059400 KB Time limit exceeded
7 Halted 0 ms 0 KB -